K L Greer
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Explore the profile of K L Greer including associated specialties, affiliations and a list of published articles.
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Articles
41
Citations
353
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Recent Articles
1.
Metzler S, Greer K, Jaszczak R
IEEE Trans Med Imaging
. 2005 Mar;
24(3):361-70.
PMID: 15754986
The effects of uncompensated electronic and mechanical shifts may compromise the resolution of pinhole single photon emission computed tomography. The resolution degradation due to uncompensated shifts is estimated through simulated...
2.
Metzler S, Bowsher J, Greer K, Jaszczak R
IEEE Trans Med Imaging
. 2002 Dec;
21(8):878-87.
PMID: 12472261
Pinhole collimators are widely used to image small organs and animals. The pinhole response function (PRF) of knife-edge pinhole collimators has been estimated previously using geometric constructions without considering penetration...
3.
Scarfone C, Jaszczak R, Gilland D, Greer K, Munley M, Marks L, et al.
Med Phys
. 1999 Sep;
26(8):1579-88.
PMID: 10501058
Pulmonary imaging using single photon emission computed tomography (SPECT) is the focus of current radiotherapy research, including dose-response analysis and three-dimensional (3D) radiation treatment planning. Improvement in the quantitative capability...
4.
Gilland D, Jaszczak R, Greer K, Coleman R
J Nucl Med
. 1998 Jun;
39(6):1105-10.
PMID: 9627354
Unlabelled: Our objective was to build and test a new system for transmission CT (TCT) imaging on a three-headed SPECT camera. The TCT images are intended for use in nonuniform...
5.
Stone C, McCormick J, Gilland D, Greer K, Coleman R, Jaszczak R
J Nucl Med
. 1998 Feb;
39(2):365-73.
PMID: 9476952
Unlabelled: The purpose of this study was to evaluate the effects of patient motion on nonuniform attenuation correction of cardiac SPECT when the transmission and emission scans were performed sequentially....
6.
Scarfone C, Jaszczak R, Li J, Soo M, Smith M, Greer K, et al.
Nucl Med Commun
. 1998 Jan;
18(11):1077-86.
PMID: 9423209
Improvements in 99Tcm-sestamibi breast lesion visualization using single photon emission tomography (SPET) may help define the clinical role of this technique alongside X-ray mammography in the diagnosis and management of...
7.
Johnson E, Wang H, McCormick J, Greer K, Coleman R, Jaszczak R
Phys Med Biol
. 1996 Aug;
41(8):1439-52.
PMID: 8858729
Filtered backprojection is commonly implemented as a pixel driven algorithm in which the density is reconstructed on an array of grid points that are usually associated with the centres of...
8.
Li J, Jaszczak R, Van Mullekom A, Scarfone C, Greer K, Coleman R
J Nucl Med
. 1996 Mar;
37(3):498-502.
PMID: 8772655
Unlabelled: Cone-beam collimators provide increased sensitivity at similar resolution compared to other collimators. The use of cone-beam collimators for brain imaging with triple-camera SPECT systems, however, results in truncation of...
9.
Li J, Jaszczak R, Greer K, Gilland D, Delong D, Coleman R
J Nucl Med
. 1995 Feb;
36(2):278-86.
PMID: 7830132
Unlabelled: This study evaluates the quantitative accuracy of SPECT for in vivo distributions of 99mTc radiopharmaceuticals using fanbeam (FB) and parallel-beam (PB) collimators and compares uniform and nonuniform attenuation correction...
10.
Johnson E, Turkington T, Jaszczak R, Gilland D, Vaidyanathan G, Greer K, et al.
Nucl Med Biol
. 1995 Jan;
22(1):45-54.
PMID: 7735169
We have evaluated SPECT and two planar imaging methods, geometric mean (GM) and buildup factor (BF), for their potential to quantitate in vivo 211At distributions in rat spinal subarachnoid spaces...